Drinking vessel stabilizing coaster



FIG. 1 is a perspective view of the coaster showing my new design;

FIG. 2 is a left side elevational view thereof, the opposite view being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a "drinking vessel stabilizing coaster," as shown and described. 